Neutral Earthing Method Selection and Earth Fault Handling for Substations in the Distribution Networks

Authors

• Theodor Connor
• Tony Yip
• Hugh Borland
• Gert Madonsela
• Bill Carman
• Espen Masvik
• Bruno Ceresoli
• Fazel Mohammadi, University of New Haven
• Gernot Druml
• Mark Osborne
• Christian Ehlert
• Bingyin Xu
• Lothar Fickert
• Kristine Valentinsen

Files

Author URLs

Dr. Mohammadi's Faculty Profile.

Description

The method of neutral earthing selected for a galvanic separated network is decisive for the supply reliability and safety of operation. It has a large impact on details in substation design. The report gives classification of methods and required equipment for fault protection, localisation as well as detailed equipment design and selection.  Furthermore, the worldwide practise is reflected in the results of a worldwide survey.

ISBN

978-2-85873-702-4

Publication Date

8-2026

Publisher

CIGRE

Keywords

Neutral Earthing Methods, Physical Differences, Safety Aspects, Earthing Requirements, Equipment Selection, Protection Requirements, Staged Earth Fault Tests, Analysis of Questionnaire, Operational Challenges, Future Development

Subject: LCSH

Electric power systems, Electric currents--Grounding

Disciplines

Electrical and Computer Engineering

Comments

CIGRE Working Group B3.52, Technical Brochure No. 997

Repository Citation

Connor, Theodor; Yip, Tony; Borland, Hugh; Madonsela, Gert; Carman, Bill; Masvik, Espen; Ceresoli, Bruno; Mohammadi, Fazel; Druml, Gernot; Osborne, Mark; Ehlert, Christian; Xu, Bingyin; Fickert, Lothar; and Valentinsen, Kristine, "Neutral Earthing Method Selection and Earth Fault Handling for Substations in the Distribution Networks" (2026). Electrical & Computer Engineering and Computer Science Book Series. 10.
https://digitalcommons.newhaven.edu/electricalcomputerengineering-books/10